Here we go. "One Tree Hill" fans have been waiting for the return of Chad Michael Murray and Hilarie Burton since their characters mysteriously disappeared after the sixth season. No explanation has been offered for their absence, except for the title of the Season 7 premiere, "4:30 A.M. (Apparently They Were Travelling Abroad)."Now, Murray says he'd be open to returning to the show. "I honestly haven't heard a word. I haven't heard anything," he tells E!. "I know how much the fans want it, and for the fans, I think I would definitely do that. Absolutely."Of course, we've heard this before from his former co-star, Burton, when she told Zap2it last August that she hadn't yet been asked to return but that she loved "One Tree Hill." Ultimately, though, she changed her tune. That said, everyone thought Season 8 would be the final season, and Burton has yet to be asked about a possible return...